Three Vouchers & Cashback 2021

Updated March 3, 2021
Getting the best mobile, broadband and SIM plan for your home and handsets is easy with Three! Browse our Three vouchers and Three discount codes for extra savings.
Cashback Rates
£33 cashback
for 12GB for £8 12 month SIM plan
4 uses today
£66 cashback
for the unlimited data 12 month SIM plan for £18 per month
2 uses today
£71.50 cashback
for contract handset on-site offers
1 use today
£77 cashback
for Huawei AI Cube with unlimited data on a 24 month contract for £25 per month
£55 cashback
for mobile broadband SIM 24 month plans with 2GB, 5GB, or 10GB of data
£55 cashback
for mobile broadband SIM 12 month plans with 1GB - 20GB of data
£16.50 cashback
for mobile broadband SIM 1 month plans with 2GB - 100GB of data
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 24 month contract for £22 per month
£77 cashback
for Huawei AI Cube with unlimited data on a 12 month contract for £32 per month and £49 upfront
£66 cashback
for Huawei B535 mobile broadband device with unlimited data, 12 month contract for £27 per month and £29 upfront
£16.50 cashback
for Pay As You Go Handsets
£33 cashback
for the 8GB data 12 month SIM plan for £8 per month
£22 cashback
for the 1GB data 12 month SIM plan for £5 per month
£27.50 cashback
for 4GB for £6 12 month SIM plan
£66 cashback
for the 30GB data 12 month SIM plan for £15 per month
£16.50 cashback
for the unlimited 1 month SIM plan for £24 per month
£74.25 cashback
iPhone 12 mini 100GB data, £19 upfront cost and £42 monthly
£74.25 cashback
iPhone 12 100GB data, £29 upfront cost and £45 monthly
£74.25 cashback
iPhone 12 Pro 100GB data, £49 upfront cost and £55 monthly
£74.25 cashback
iPhone 12 Pro Max with 100GB data, £79 upfront cost and £59 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £32 monthly
£74.25 cashback
for Samsung Galaxy S20, 100GB data, £29 upfront cost and £38 monthly
£74.25 cashback
for Samsung Galaxy S20 5G, 100GB data, £29 upfront cost with £36 monthly
£74.25 cashback
for Samsung Galaxy S20+ 5G, 100GB data, £49 upfront cost and £43 monthly
£74.25 cashback
for Samsung Galaxy A51, 100GB data, £19 upfront cost and £23 monthly
£74.25 cashback
for Apple iPhone SE, 30GB data, £19 upfront cost and £29 monthly
£74.25 cashback
for Samsung Galaxy A71, 100GB data, £29 upfront cost and £27 monthly
£74.25 cashback
for Huawei P30 Pro, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for Apple iPhone 11 Pro, 100GB data, £49 upfront cost and £49 monthly
£74.25 cashback
for Apple iPhone SE, 100GB data, £29 upfront cost and £29 monthly
£74.25 cashback
for OnePlus 8, 100GB data, £29 upfront cost and £39 monthly
£74.25 cashback
for OnePlus 8 Pro, 100GB data, £39 upfront cost and £49 monthly
£74.25 cashback
for OnePlus Nord, 100GB data, £29 upfront cost and £34 monthly
£55 cashback
for Apple iPad 7th Generation, 100GB data, 24 month contract for £39 per month with £49 upfront cost
£55 cashback
for Samsung Galaxy Tab A 10.1 2019, 100GB data, 24 month contract for £27 per month
£66 cashback
for the Huawei 4G Mobile WiFi with unlimited data for £22 per month
£55 cashback
for Huawei E5573bs-322 4G Mobile Wi-Fi, 40GB data, 24 month contract for £13 per month
£55 cashback
for Huawei MediaPad T5, 100GB data, 24 month contract for £25 per month
£55 cashback
for Apple iPad Pro 11, 40GB data, 24 month contract for £48 per month with £49 upfront cost

50%
OFF
12 uses today

Student Discount: Free gift plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!
50% Off
12 uses today

Student Discount: Free gift plus 50% off select plans for 6 months

Enjoy these Three mobile, tablet, and smart tech offers for students and score free gifts plus 50% off for the first 6 months!

£80
OFF
3 uses today

Up to £80 off in cash rewards when you refer a friend

Invite your friends and family to get up to £80 off when they sign up for a monthly Three mobile phone, as well as £40 off with SIM only plans and mobile broadband. Grab everyone you know and start saving together!
£80 Off
3 uses today

Up to £80 off in cash rewards when you refer a friend

Invite your friends and family to get up to £80 off when they sign up for a monthly Three mobile phone, as well as £40 off with SIM only plans and mobile broadband. Grab everyone you know and start saving together!

50%
OFF
7 uses today

50% off this unlimited data SIM on a 24 month advanced plan

50% Off
7 uses today

50% off this unlimited data SIM on a 24 month advanced plan

50%
OFF
15 uses today

10-50% off SIM Only plans for existing customers

Browse these Three SIM only plans for savings up to 50% select offers
50% Off
15 uses today

10-50% off SIM Only plans for existing customers

Browse these Three SIM only plans for savings up to 50% select offers

50%
OFF
3 uses today

Winter Deals: Up to 50% off plus no upfront cost and free gifts on select mobile plans

50% Off
3 uses today

Winter Deals: Up to 50% off plus no upfront cost and free gifts on select mobile plans

FROM
£28
4 uses today

Home broadband and internet packages from £28

Browse these home internet deals with broadband and high speed packages from just £28 per month at Three.
From £28
4 uses today

Home broadband and internet packages from £28

Browse these home internet deals with broadband and high speed packages from just £28 per month at Three.

50%
OFF
3 uses today

Winter Offers: First 6 months for half price on select mobile phone and SIM plans

50% Off
3 uses today

Winter Offers: First 6 months for half price on select mobile phone and SIM plans

80%
OFF
3 uses today

Special Offer: 50-80% off selected phone cases

Get Deal
80% Off
3 uses today

Special Offer: 50-80% off selected phone cases

50%
OFF
5 uses today

Winter Specials: £10 a month for unlimited data (50% off)

50% Off
5 uses today

Winter Specials: £10 a month for unlimited data (50% off)

£34.50
2 uses today

Samsung S21 Ultra: First 6 months 50% off at £34.50 per month

Get the new Samsung Galaxy S21 Ultra for half the price at £34.50 per month for the first 6 months
£34.50
2 uses today

Samsung S21 Ultra: First 6 months 50% off at £34.50 per month

Get the new Samsung Galaxy S21 Ultra for half the price at £34.50 per month for the first 6 months

FREE
GIFT
2 uses today

Apple TV+ free for one year with new iPhones and iPads

Get Deal
Free Gift
2 uses today

Apple TV+ free for one year with new iPhones and iPads

50%
OFF
2 uses today

50% off the first 6 months with the Apple iPhone 12 Pro Max

50% Off
2 uses today

50% off the first 6 months with the Apple iPhone 12 Pro Max

FROM
£17
2 uses today

Wide range of Samsung phones with plans starting from £17/month

From £17
2 uses today

Wide range of Samsung phones with plans starting from £17/month

FROM
£10
3 uses today

Tablet plans for as low as £10 a month

From £10
3 uses today

Tablet plans for as low as £10 a month

FROM
£5
7 uses today

SIM only plans starting at £5 this winter

From £5
7 uses today

SIM only plans starting at £5 this winter

50%
OFF
4 uses today

50% off the Apple iPhone 12 for the first 6 months with this Winter Special

50% Off
4 uses today

50% off the Apple iPhone 12 for the first 6 months with this Winter Special

FREE
SIM
2 uses today

Free SIM with Pay As You Go mobile plans

Free SIM
2 uses today

Free SIM with Pay As You Go mobile plans

£20
2 uses today

50GB data pack for £20

£20
2 uses today

50GB data pack for £20

TOP UP
2 uses today

Top up your phone here

Three top up right here! Stay safe and do it from the comfort of your own home.
Top Up
2 uses today

Top up your phone here

Three top up right here! Stay safe and do it from the comfort of your own home.

PRICE MATCH
2 uses today

Best prices around with the Business Price Promise

Get the best Three UK deals around for your business. If you find a better contract deal with these select competitors, Three will be happy to price match it!
Price Match
2 uses today

Best prices around with the Business Price Promise

Get the best Three UK deals around for your business. If you find a better contract deal with these select competitors, Three will be happy to price match it!

FREE
DELIVERY
2 uses today

Free delivery on all your orders

Free Delivery
2 uses today

Free delivery on all your orders

FREE
APP
2 uses today

Download the app for free

Free App
2 uses today

Download the app for free

Tons Of Easy Savings

Looking for an additional plan or device as an existing customer? They have plenty of awesome Three deals to help you out. Add an extra SIM or device to your existing account or complete a Three upgrade to a shiny new phone in just a few clicks by browsing their “Offers” page online. We’ll also post all of the best Three vouchers and upcoming Three sales right here so you don’t miss out!

If you’re a student on a tight budget, you’re in luck. With their exclusive Three discounts for students, you can get your next phone, SIM, or broadband purchase for less. Just enter your university email address to access a wide range of specials just for students. Whether you’re looking for a 1-month or 12-month SIM plan, they’re undoubtedly the best choice for you.

Downloading Discounts

With the Three app for iOS and Android, anything is possible. From tracking your latest bill and usage to completing your next Three top-up, in just a few taps, the whole world can be yours. Now you can manage your account on the move; some features include viewing your Pay As You Go credit balance, bill breakdowns, check your upgrade eligibility, and you can even browse the latest Three UK deals to see what’s new. Plus, if you need support from the Three contact team, live chat is always available for your convenience from your device.

Easy Deliveries

They always offer free, next working day delivery on all new purchases when you join! Enjoy this offer on phones, tablets, and MiFi that are ordered before 4 PM for delivery to your billing address. If you upgraded your phone online or over the phone, your new device will be delivered on their chosen date, and you will be charged £4.99 on your next bill— make sure you use a Three discount code or one of our Three voucher codes to save on this fee! If you’re still unsure about making the switch, just read a Three network review to see why customers choose them as their #1 network provider.

Popular Expired Three Discount Codes
50% Off
3 uses today

Extra 50% off SIM Only plan with unlimited data fo the first 6 months

Save half price right now with this Three SIM Only offer!
50% Off
2 uses today

Spring Deal: 50% off select mobile and sim only plans for the first 6 months

Browse these mobile and sim only data plans at Three and enjoy the first 6 months at 50% off on select packages.
£18
2 uses today

100GB for £18 per month with this SIM Only Offer

Catch this Three SIM Only deal and get 100GB for £18!

FAQs with


How do you get the best discount at Three?

The best discounts, deals, and voucher codes can always be found right here at Quidco! You can also browse their exclusive customer offers page, join their mailing list for news about upcoming sales, and choose one of their plan bundles to cut down the cost of your next device!


Does Three do a student discount?

You don't have to sacrifice great cell service when you're on a tight student budget! With a valid academic ID, you can enjoy six months of service at half-price, as well as a free explorer backpack and wireless headphones. Just head to their website for more information on how to save!